muller



(No Model.) 2 Sheets-Sheet 1.

E. A. MULLER.

FRICTION CLUTCH. No. 431,121. Patented July 1,1890" FIEZ. F155. V FIEA.

qwikweoaao gvwaM foz (No Model.) 2 Sheets-Sheet 2. 1 E. A. MULLER.

'FRIGTION ULUTGH. No. 431,121. Patented July 1, 189 0,.

FIE-5. F'|E.6.

UNITED STATES PATENT OFFICE.

EDIVARD A. MULLER, OF CINCINNATI, OHIO, ASSIGNOR TO THE BRADFORD MILL COMPANY, OF SAME PLACE.

FRICTION-CLUTCH.

SPECIFICATION forming part of Letters Patent No. 431,121, dated July 1, 1890.

Application filed March 15, 1890. $erial No. 343,968. (No model.)

To all whom it may concern:

Be it known that I, EDWARD A. MULLER, a citizen of the United States, and a resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Friction-Clutches, of

which the followingis a specification.

The object of my invention is to produce a reliable and inexpensive friction-clutch for drivingpulleys.

The invention consists in the peculiar arrangements and combinations illustrated in the accompanying drawings, in connection with which the invention will be first fully described, and then will be particularly referred to and pointed out in the claims.

Referring now to said drawings, in which like parts are indicated by similar referenceletters throughout the various views, Figure 1 is a View, partly in elevation and partly in broken section, of a counter-shaft having my clutch secured upon it. Fig. 2 is an elevation, upon an enlarged scale, of the clutch with the clamping-levers removed. Fig. 3 is an edge elevation of the same, with the levers in position. Fig. 4 is a view similar to Fig. 2, but with the levers in position. Fig. 5 is an axial section taken through the opposite arms of the loose pulley. Fig. 6 is an axial section of the clutch, taken longitudinally through its arms or cross-head.

The counter-shaftA and cone-pulley B are of ordinary construction, and the loose pulleys C are provided with flanges c, which project from one side of their arms, beingin this respect similar to those employed with other forms of friction'clutches.

The cross-headD, its hub cl, and the clutchring E, Fig. 2, with its outwardly-projecting lugs c, are preferably cast in a single piece, the ring being separated at 6' between the lugs, as'shown, but the end (1' of the cross head which is adjacent to the lugs is, when cast, attached to the edge of the ring E. The hub 61 is bored out true to fit the shaft A, and the inside of the ring Eturned off to fit freely over the flange c of the loose pulley C, after which the end d of the cross-head is severed from the edge of the ring E at 6 leaving the lug ends of the ring free, so that when the lugs are forced toward each other the rings will be clamped tightly upon the flange c of the loose pulley, thus coupling the pulley to the shaft. The ring E is tightened upon the flange c by two levers F, which are pivoted upon the end d of the cross-head D by studbolts f, which bolts, for additional strength, are connected by a clip-bar f. The short arms of the levers pass upon each side of the lugs e, and are provided with adj listing-screws f which are tapped through these arms to bear against the lugs. These screws have cone-shap ed or rounded points, are preferably of steel, and are provided with jam-nuts to retain them in place.

The long arms of the levers F incline in wardly to the plane of the clutch-axis, their extreme ends being in a position, when the clutch is fixed upon the shaft, to be separated by the collar G, which is fitted to slide upon the shaft. The collar has an annular groove 9 around it to receive the bifurcated end of a shiftingdever, (not shown,) and its ends are cone-shaped or rounded, so that when it is forced in the direction of the clutch the ends of the lever-arms slide up the inclined ends of the collar. The long arms are thus forced apart, the ring E tightened upon the flange c, and the pulley C coupled to the shaft. WVhen the collar is withdrawn from between the levers the ring springs open and releases the pulley. I have shown in Fig. 1 the collar arranged between two pulleys, each of which is provided with my clutch. In this case the collar is beveled or rounded at each end, so as to be forced between the arms of either clutch. The counter-shaft shown, Fig. 1, is arranged for lathes or machines to be driven in either direction, one of the pulleys driving a direct and the other a cross belt.

I claim 1. In a friction-clutch, the cross-head and ring cast in. one piece, said ring having lugs e, projecting radially alongside the free arm of the cross-head, in combination with the levers F, pivoted upon the end of said arm, and having their short arms embracing said lugs, and a collar mounted to slide upon the axis of the cross-head for the purpose of spreading the long arms of said levers, closing the short arms, and compressing the ring, substantially as and for the purpose set forth.

2. The combination, substantially as speoi- 3. The combination, substantially as herefied, of the cross-head D, the split ring E, seinbefore set forth, in a friction-clutch, of the cured to one arm of said cross-head and havpulley 0, having flange to, and cross-head D, ing its free ends turned, forming the lugs e in and split ring E, the levers F, pivoted upon I 5 5 proximity to the opposite end of the crossthe cross-head, and the clip-bar and sliding head, the pivoted levers F, having their short collar. arms extending upon opposite sides of said lugs, the set-screws f passing through said EDNVARD MULLER arms to take up the wear of the ring, and Witnesses:

10 means, such as shown, to operate said levers I J ACOB R. STEWART, to close said ring. 7 GEo. J. MURRAY. 

